@lucize Yes, in this device have stock u-boot, it have tftboot and bootm. Here is a complete bootlog from the last openwrt image in the archive and here is the old github commit for this device
U-Boot 1.1.7 (Jan 8 2010 - 14:26:25)
AP81 (ar7100) U-boot
sri
64 MB
WRT160NL u-boot version: 1.0.0
Top of RAM usable for U-Boot at: 84000000
Reserving 279k for U-Boot at: 83fb8000
Reserving 192k for malloc() at: 83f88000
Reserving 44 Bytes for Board Info at: 83f87fd4
Reserving 36 Bytes for Global Data at: 83f87fb0
Reserving 128k for boot params() at: 83f67fb0
Stack Pointer at: 83f67f98
Now running in RAM - U-Boot at: 83fb8000
id read 0x100000ff
flash size 8MB, sector count = 128
Flash: 8 MB
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: ag7100_enet_initialize...
ag7100 get ethaddr for device eth0
Fetching MAC Address from 0x83feb2b0
--------***** Get the RTL8306SD Manufactory ID=386c *****-------
Reg6: speed=0 nway=1 duplex=1
Reg5: speed=0 nway=0 duplex=0
Reg1: a1=7fd9 a2=3210 a3=16d4 a4=3210 a5=0
Reg1: a1=7fd9 a2=3210 a3=16d4 a4=3210
Reg1: a1=7fd9 a2=3210 a3=16d4 a4=3210
Reg1: a1=7fd9 a2=3210 a3=16d4 a4=3210
Reg1: a1=7fd9 a2=3210 a3=16d4 a4=3210
eth0: 98:fc:11:70:bb:56
eth0 up
eth0
### main_loop entered: bootdelay=1
Hit any key to stop autoboot: 0
## Booting WRT160NL ...
Code pattern OK: NL1X Expect: NL1X
Application code length 0x0015699c
CRC OK
## Booting image at bf04003c ...
Image Name: MIPS OpenWrt Linux-4.4.14
Created: 2017-11-04 21:15:13 UTC
Image Type: MIPS Linux Kernel Image (gzip compressed)
Data Size: 1403199 Bytes = 1.3 MB
Load Address: 80060000
Entry Point: 80060000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
kernel: org len = 1403199, new len = 1441792
No initrd
## Transferring control to Linux (at address 80060000) ...
## Giving linux memsize in bytes, 67108864
Starting kernel ...
OpenWrt kernel loader for AR7XXX/AR9XXX
Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
Decompressing kernel... done!
Starting kernel at 80060000...
[ 0.000000] Linux version 4.4.14 (buildbot@owrtbuild01) (gcc version 5.3.0 (OpenWrt GCC 5.3.0 12009) ) #1 Wed Dec 6 23:56:36 UTC 2017
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU0 revision is: 00019374 (MIPS 24Kc)
[ 0.000000] SoC: Atheros AR9130 rev 2
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 04000000 @ 00000000 (usable)
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] No valid device tree found, continuing without
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000000000000-0x0000000003ffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x0000000003ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
[ 0.000000] Kernel command line: board=E2100L console=ttyS0,115200 rootfstype=squashfs,jffs2 noinitrd
[ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Writing ErrCtl register=00000000
[ 0.000000] Readback ErrCtl register=00000000
[ 0.000000] Memory: 59904K/65536K available (3134K kernel code, 174K rwdata, 784K rodata, 316K init, 206K bss, 5632K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS:51
[ 0.000000] Clocks: CPU:400.000MHz, DDR:400.000MHz, AHB:200.000MHz, Ref:5.000MHz
[ 0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302233 ns
[ 0.000013] sched_clock: 32 bits at 200MHz, resolution 5ns, wraps every 10737418237ns
[ 0.007884] Calibrating delay loop... 265.42 BogoMIPS (lpj=1327104)
[ 0.090589] pid_max: default: 32768 minimum: 301
[ 0.095359] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.101971] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.112334] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.123784] NET: Registered protocol family 16
[ 0.129999] MIPS: machine is Linksys E2100L
[ 0.685768] clocksource: Switched to clocksource MIPS
[ 0.692498] NET: Registered protocol family 2
[ 0.698132] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.705110] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.711529] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.718014] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.723854] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.730469] NET: Registered protocol family 1
[ 0.736268] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.764014] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.769914] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.782684] io scheduler noop registered
[ 0.786687] io scheduler deadline registered (default)
[ 0.792147] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[ 0.802379] console [ttyS0] disabled
[ 0.825996] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 12500000) is a 16550A
[ 0.834684] console [ttyS0] enabled
[ 0.834684] console [ttyS0] enabled
[ 0.841701] bootconsole [early0] disabled
[ 0.841701] bootconsole [early0] disabled
[ 0.855970] m25p80 spi0.0: found mx25l6405d, expected m25p80
[ 0.861699] m25p80 spi0.0: mx25l6405d (8192 Kbytes)
[ 0.867722] 6 cybertan partitions found on MTD device spi0.0
[ 0.873420] Creating 6 MTD partitions on "spi0.0":
[ 0.878303] 0x000000000000-0x000000040000 : "u-boot"
[ 0.885080] 0x000000040000-0x0000001a0000 : "kernel"
[ 0.892095] 0x0000001a0000-0x0000007e0000 : "rootfs"
[ 0.899088] mtd: device 2 (rootfs) set to be root filesystem
[ 0.904860] 1 squashfs-split partitions found on MTD device rootfs
[ 0.911148] 0x000000390000-0x0000007e0000 : "rootfs_data"
[ 0.918593] 0x0000007e0000-0x0000007f0000 : "nvram"
[ 0.925487] 0x0000007f0000-0x000000800000 : "art"
[ 0.932328] 0x000000040000-0x0000007e0000 : "firmware"
[ 0.954308] libphy: ag71xx_mdio: probed
[ 1.366275] Registering RTL8306SD switch with Chip ID: 0x5988, version: 0x0000
[ 1.373586] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=00008306, driver=Realtek RTL8306S]
[ 1.384133] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RMII
[ 1.785821] ag71xx ag71xx.1: connected to PHY at ag71xx-mdio.0:04 [uid=00008306, driver=Realtek RTL8306S]
[ 1.796421] eth1: Atheros AG71xx at 0xba000000, irq 5, mode:RMII
[ 1.805304] NET: Registered protocol family 10
[ 1.814729] NET: Registered protocol family 17
[ 1.819370] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[ 1.832135] Bridge firewalling registered
[ 1.836332] 8021q: 802.1Q VLAN Support v1.8
[ 1.849430] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[ 1.858546] Freeing unused kernel memory: 316K (80461000 - 804b0000)
[ 3.317817] init: Console is alive
[ 3.321496] init: - watchdog -
[ 4.672078] usbcore: registered new interface driver usbfs
[ 4.677809] usbcore: registered new interface driver hub
[ 4.683267] usbcore: registered new device driver usb
[ 4.694671] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.703142] ehci-platform: EHCI generic platform driver
[ 4.708582] ehci-platform ehci-platform: EHCI Host Controller
[ 4.714412] ehci-platform ehci-platform: new USB bus registered, assigned bus number 1
[ 4.722524] ehci-platform ehci-platform: irq 3, io mem 0x1b000000
[ 4.745818] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00
[ 4.753321] hub 1-0:1.0: USB hub found
[ 4.757525] hub 1-0:1.0: 1 port detected
[ 4.764977] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.772957] ohci-platform: OHCI generic platform driver
[ 4.788916] init: - preinit -
[ 5.544662] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 5.575409] random: procd urandom read with 9 bits of entropy available
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 6.546128] eth0: link up (100Mbps/Full duplex)
[ 6.550737] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 8.771004] jffs2: notice: (382) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[ 8.788502] mount_root: switching to jffs2 overlay
[ 8.828729] eth0: link down
[ 8.844016] procd: - early -
[ 8.847860] procd: - watchdog -
[ 9.552327] procd: - ubus -
[ 9.608503] procd: - init -
Please press Enter to activate this console.
[ 10.571325] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 10.594688] Loading modules backported from Linux version wt-2016-05-12-0-g7a54796
[ 10.602377] Backport generated by backports.git backports-20160216-0-ge3c56e4
[ 10.613667] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 10.632223] nf_conntrack version 0.5.0 (940 buckets, 3760 max)
[ 10.680254] xt_time: kernel timezone is -0000
[ 10.756875] PPP generic driver version 2.4.2
[ 10.764524] NET: Registered protocol family 24
[ 10.864193] ieee80211 phy0: Atheros AR9100 MAC/BB Rev:7 AR2122 RF Rev:a2 mem=0xb80c0000, irq=2
[ 21.920228] device eth0 entered promiscuous mode
[ 21.937167] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[ 21.998337] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 23.546242] eth0: link up (100Mbps/Full duplex)
[ 23.550870] br-lan: port 1(eth0) entered forwarding state
[ 23.556391] br-lan: port 1(eth0) entered forwarding state
[ 23.585866] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[ 25.555784] br-lan: port 1(eth0) entered forwarding state
[ 80.875814] random: nonblocking pool is initialized